Exact Matching Concepts from Other Schemes

Sources

found: Encyc. Brit. Website, Nov. 7, 2001(De Geer, Gerhard (Jakob), Friherre (Baron) b. Oct. 2, 1858, Stockholm, Swed., d. July 23, 1943, Saltsjöbaden; Swedish geologist, originator of the varve-counting method used in geochronology; appointed to the Swedish Geological Survey in 1878 and received a master's degree in geology, Uppsala Univ., 1879; studied the glaciers of Spitsbergen in a series of expeditions; became prof. at the Univ. of Stockholm in 1897, serving as pres. from 1902 to 1910; after retiring in 1924, headed Institute of Geochronology at the univ.)